BRP EVINRUDE INSTALLATION MANUAL Pdf Download. Page 44 OUTBOARD INSTALLATION TRANSOM MEASURING AND DRILLING 15 HP, P OWER ODELS IMPORTANT: This is not a template. 1. Center of Transom 2. Top of Transom 3. 5 Control Boxes | Motors & Controls | North America Water Controls are an integral part of a submersible motor power system. Rigorous component testing ensures the most robust products in the industry. Applications Franklin Electric submersible control boxes are designed and optimized specifically for Franklin three-wire, single-phase motors rated 1/3 to 15 hp.